GJournal uses the GEOM disk management framework. Currently, only FreeBSD 5+ support it. If the other BSDs copy the GEOM framework, then maybe they'll get all the GEOM modules that come with it. However, none of the other BSDs have shown any interest in doing so.

But if skipping the light (assuming that there isn't a Ups) and the partitions are large requires a long fsck of hdd don't think that it may be a weak point for an operating system especially when typically are used in server?
Or the problem does not arise because since the servers are equipped with ups there relies entirely hardware?

I have another question correlated with the previous whereas I understand is unlikely to support a journalized in openbsd and netbsd.

When will change the license file system ZFS (on Gpl) is a concrete hope to be adopted as default by all systems Bsd?